The Simpsons: Tapped Out Mystery Box Upgrade content update

The Simpsons: Tapped Out Mystery Box Upgrade content update was released April 1, 2015, with an in-game update and App Store update version 4.13.5. The update added a upgraded Mystery Box, enabling a new way to purchase in-game Cash with Donuts, more additions to the Mystery Box (including new later-level Cash and premium items), and to remove (almost all features of) the Superheroes event.The quest for the free first Mystery Box expired April 30th at 8am GMT.